American drivers notice soaring gas prices. But another fuel – diesel – is also on the rise, and at a much faster pace.

In the U.S., Diesel has mostly been more expensive than gasoline for nearly twenty years. The price gap came about as new rules for cleaner diesel took effect in 2006, as refineries had to run ...

If you don't drive a big truck, you might not give diesel fuel prices a second look when you're filling up at the gas station ...